Counterthrust-pressure motor



Feb. 25, 1930.

C. G. EDWARDS COUNTER THRUST PRESSURE MOTOR Filed July 15, 1929 a fence I 40 Figure 1 is a vertical'sectl Patented Feb. 25, 1930* CLARENCE e rinwi nns, or LOS nlvennns, cA'LIFonnrAJ v "ooUNrER'rHBIIsr-rREssu n iirocrorz,

1 p'p c'am med rJ 'ulyi 15,

invention is a counter-thrust pressure ,nlotor andhas, to do with improvements in a type of motor set vforth in my Patent No. 1,678,424; issued-July 24,: 1928, for counter 5 thrust pressure motor, U. Patent, No. 1,701,322; issuedFebruary 5, 1929, forcounterthrustpressure motor and myapplication for-I118, LettersPatent filedApril-ll, 192 8,

Serial No; s urernotor. V i a An object. of my present invention is to simplify {the construction of the piston; cyl- 269,087,' for counter thrust-presinder and hanger 'of -a counter thrust motor and l in which the cylinder is fespeoially 15 adapted for-fair cooling;

- her, object of my invention is toluse a construction of hanger on the :pi'ston which willl imaterially lightengthe ;Weight carried by the piston and effectively operate tOEe ert a "'2 counter thrustin the operation of the piston in t cyli de -i e I Anotherobjejct ofzrny-inventionv is a cylinder witha curved groove in whichthe hanger -on.- ;,th'e piston fits. This-hanger is preferably made in the formofa-strapfitting' 'on through anzengineof my inventiony'w I =:F"g.' -2':is a partial transverse section on the V f .Fig. -'3 is a perspec tiveviewof .thehange'r counter sunk heads.

sorthat this-cup fits in the grooved 5 having 1929. Serial no; 37835 14.

" Fig. i is afviewasindilar to; Fig. I2"with:the i cap formingthe slot removed; r .o r

i Fig.15 is an enlargedpartiahsectionrof Fig.

2, showing 2 the :manner Eofi securing the 'cap to'the cylinder;

Fig.6 is anelevationl-of thenap; i In the drawings, thezengine biaseyis desig+ natedrll'havingacrank case '12fandaicylinder 13 mounted :on the :base, this cylinder being provided with aecylinderihead li. The 0321- inder has a longitudinal groo=ve$15glthis groove being formed with "two parallel sides 16 joined by aserni cy1inder-.l7s.

The piston-18 has a:s1i'ghtrecess 19.-at =the topvand another recess =20j'at -the bottoniex- 1 tending partly inwardly iron-1 the outer pejriphery. The hanger assembly 21;has .a1ver;-

tical, strap 22 fixed against the .sideoif the pistonasishown in Figs. '1 ands2 rind has a :top in.- turnedfiange 23', and Ya lower i-nturned'flange :24, these flanges fittingiinthe recesses w and 2Q resp'ective1y.* Thestrrapi's seeunedqto the j sidewall of thepistdn.by-fscrewss25 having The pistonz rigngs 261th; V inthe @groovesbehindthestrap22. 1 ,A-txthelowertendof ithe; 'trflip"tllGj1'e t i$i ain inverted cup127. This'fris formal -wi .,a flat top 28 andawith parallel f'vert' ca l gsi-des 29 joined by a semi-cyclindrical poiytion'zfBO f a *close' sliding fit stile-rein. The edges ot the strapv 22 are providedwithrt er tica'l, ribs 31 "which aid in" confining the gas "pressure at the joint ofstherdylindcr-andgcap.

The groove in the general"Tcoiistructionris --i:'ormed iby havingfia vertical slot- 82 in {the cylinder; the 'strapr22 attached torthe pis ton fitting in this slot? ,A removable-cap 13 8 has? flanges '34 on :oppositewsides and: these 35 torallow bolting :o'f "the'acap on, the: cylinder; The special manner cofrbo-ltinglis a-i-n -dicated particularlyein Fi'gs-r 52:1a'nd :5 which illustria-tes r the-"cylinders: as: having dozunten- 37 extend through these holes and each has a nut 38 threaded thereon. By this means the bolts are fastened tight to the cylinders, the heads 89 of the bolts being outside of the wearing surface 40 of the cylinders. The bolts have a threaded socket 41 in which is threaded the screws 42 which screws engage a cover 43. The bolts are arranged to extend outwardly through the lateral slots 35 in the cap 33 and the cover 43 engages the flanges of the cap so that when the screws 42 are tightened the cap is bolted solidly to the cylinder.

There is preferably a packing gasket 44 used between the outside of the cylinder and the cap 33 to form a gas tight joint. The cylinder is cooled by having cooling vanes 45 thereon and the cap also has cooling vanes 46. If desired the piston maybe counter balanced by having an enlargement 47 cast therein which may be ground or filed off to balance the hanger. 1

With this construction as above described,

' it will be seen that a comparatively "light cup 27 at the bottom of the piston on one side,

the detachable cap covering the vertical slot in the cylinders allows inspection of the hanger by removing the cap and the clearance of the inverted cup in the channel 15 is adj ustable by the packing gaskets 44. The bolts holding the cap in place are rigidly secured to the cylinder so that it is not necessary to remove the bolts when removing the cap and as the heads of these bolts are countersunk, they do not interfere with-the operation of the piston. V

In operation the exploded and burning gases fill the channel 15 and give a lateral pressure on thepiston, thus counter-balancing the lateral pressure'due to thereactio'n of the gases on thejpiston headvand' the con necting rod against the crank when in an inclined position. i

Various changes may be made in the principles of myinvention without departing from the spirit thereof as set forth in the description, drawings and claims.

I claim:

1. A motor having a cylinder with a vertical slot, a cap forming a channel on the cylinder at the said slot, a piston having a hanger operating in the said slot and channel,

the hanger overlapping the joint between the cylinder and the cap.

2. A motor having a cylinder with a longitudinal slot, a cap secured to the cylinder and forming a channel at the said slot, a piston having a hanger slidable in the slot with a projection forming a closure for the channel, the marginal edges of the hanger overlapping the joint between the cap and the cylinder.

3. A motorhaving a cylinder with a longitudinal slot, a cap secured to thecylinderand forming a channel ontheoutside of the slot,

a hanger secured to the sides of the piston and having a hollow projection, the hollow projection forming a closure for the channel and the main body of the hanger operating in the said slot, the marginal edges of the hanger overlapping the joint between the cap and the cylinder.

4. A motor having a cylinder with a longitudinal slot, a cap having an arched curve fitting over the slot and forming a. channel, means secured to the cylinder from the inside-thereof to clamp the cap to the side of the cylinder, a piston having a hanger operating-in said slot with a projection forming a closure for the channel, the marginal edges of the hanger overlapping the joint between the cylinder. and the cap.

' 5. A motor having a cylinder with a longitudinal slot, bolts fitting on the inside of the cylinder adjacent opposite edges of the slot, a cap fitted over the slot and secured to the said bolts, the cap forming a channel, and a piston having a hanger operating in the said slot with a projection forming a closure for the channel.

' 6. A motor having a cylinder with a longitudinal slot and bolts secured to the cylinder on the inside thereof adjacent the marginal edges of the slot, a cap-having a screw threaded means attaching same to the bolts, the cap forming a channel, and a piston having a hanger, the hanger operating in the slot and with a projection forming. a closure for the channel. I

7. In a. motor, a cylinder having a longitudinal slot with bolts secured to the cylinder from the inside adjacent themarginal edges of the slot, the-heads of'the bolts being counter-sunk, means attaching said'bolts to the cylinder, each bolt'having a socket, a cover cap fitting over the slot and screw threaded means securing the cap' to the slots, a series ofbolts fittingzthroughrholes in'the cylinder on opposite sides ofthe slot, the heads of the bolts being counter-sunk, nuts on the bolts on the outside ofthe cylinder, each bolt having a socket, a cover bearing on the flange'of the cap and at each bolt,

and a screw extending through'the cover into the socket of each bolt. v

10. In a motor, a cylinder having a longitudinal channel, a piston having a hanger in the form 'of' astrapfthe ends of the' strap extending transversely over the, top and bot- '15 name to thls speclfication.

tom of the piston and said hanger having a projection operatlng in the said channel.

11. In a motor, a cylinder havin a longitudinal channel, a piston havin a anger in the form of a strap secured to t e side of the piston and having end flanges engaging over the top and bottom of the piston, and a hollow projection on the hanger operating in the said channel. 12. In a motor as claimed in claim, 11, the hanger having longitudinal ribs-oniits marginal ed e, such ribs being adapted to cover a joint etWeen the cylinder proper and a 7 structure forming the channel. I

In testimony whereof I havesigned my CLARENCE G. EDWARDS.

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